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Add explanation to 'existential_type_const' test

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Aaron Hill 2019-07-05 20:15:31 -04:00
parent 66b2b97e07
commit 2f41962053
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2 changed files with 5 additions and 1 deletions
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4
src/test/ui/existential_types/existential_type_const.rs
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@ -1,6 +1,10 @@
// check-pass
#![feature(existential_type)]
// Currently, the `existential_type` feature implicitly
// depends on `impl_trait_in_bindings` in order to work properly.
// Specifically, this line requires `impl_trait_in_bindings` to be enabled:
// https://github.com/rust-lang/rust/blob/481068a707679257e2a738b40987246e0420e787/src/librustc_typeck/check/mod.rs#L856
#![feature(impl_trait_in_bindings)]
//~^ WARN the feature `impl_trait_in_bindings` is incomplete and may cause the compiler to crash

2
src/test/ui/existential_types/existential_type_const.stderr
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@ -1,5 +1,5 @@
warning: the feature `impl_trait_in_bindings` is incomplete and may cause the compiler to crash
--> $DIR/existential_type_const.rs:4:12
--> $DIR/existential_type_const.rs:8:12
|
LL | #![feature(impl_trait_in_bindings)]
| ^^^^^^^^^^^^^^^^^^^^^^